.slide-enter-active, .slide-leave-active{
  transition: opacity .3s ease;
}
.slide-enter{
  opacity: 1;
}
.slide-leave-to{
  opacity: 0;
}

.btn-start{
  line-height: 1;
  outline: none;
  width: 4.5rem;
  height: 1rem;
  background-color: #f38931;
  color: #FFFFFF;
  font-size: 0.4rem;
  border-radius:0.5rem;
  box-shadow: 0 4px 2px rgba(63, 63, 63, 0.62);
  display: inline-block;
  transition: all 0.3s;
}
.btn-start:active{
  background-color: #db772f;
}
